Malicious PDF — malware analysis report

Static analysis result for SHA-256 baf6c7c15443781f…

MALICIOUS

PDF

42.2 KB Created: 2020-08-18 17:27:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ccf16f13542b65b15e039ea9262ec7c1 SHA-1: ef8f5c90739c6ab9a39706c6c01c48a8df6a4be9 SHA-256: baf6c7c15443781fc1bcb9dab1765e4f74aff43f2515daf59a85ab6ad579d7de
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains the text 'Cool scratch games' and the malicious URL, indicating a lure to a potentially harmful site. The ML classifier strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.cc/pify?keyword=cool+scratch+games In PDF document text
    • http://files.slopefit.com/uploads/1/3/0/8/130873947/4f15622c959df.pdfIn PDF document text
    • http://files.morriscountypca.org/uploads/1/3/0/8/130874566/bixizajapowere-xinut-libodinatof.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3848/1311/files/40584335702.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7489/3477/files/sawojoriborebipalefuka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5658/5111/files/xeberup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5014/7745/files/voyage_en_autistan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1637/2892/files/24323879744.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5710/9399/files/automobile_engineering_books_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2289/9608/files/98659397520.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4988/5606/files/sujegimekivupowovatedonob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8752/7078/files/51294998140.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0454/8486/7736/files/13331364577.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gopag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8865/7051/files/wotikije.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8909/3018/files/wukibavom.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 4

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000067cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67CC 5116 bytes
SHA-256: 3f87829bfbe74881702a51b17a6875cb6440e858cb6dbbb8821ee7a1dc66d6fd
font_01_sfnt_off00007908.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7908 10248 bytes
SHA-256: 1108dd5466c8045ff869c1b40c38f13ea59f490e1dc49e20a84b876102a27ce9

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